218 



LAKE SUPERIOR. 



afiinis. 



^ scaber. 

 Htdrophilus Fabr. 



glaber Hbst. Col. 7, 298. 



lateralis P. £/. 1, 251. 



nimbatus Say. J. Ac. 3, 203. 



obtusatus Say. J. Ac. 3, 202. 

 Laccobius Leach. Er. 



punctatus Mels. P. Ac. 2, 100. 

 Hydrobius Leach. 



('§ Philhydrus Sol.) 



lacustris. 



perplexus. 



nebulosus. 



Hydrophilus neb. Say. Exp. 2, 27 7. 

 Cycloxotum Dej. Muls. 



subcupreum. 



Hydrophilus subc. Say. J. Ac. 5, 

 189. 

 Cercyon Leach. 



mundum Mels. P. Ac. 2, 102. 



ambiguum. 



dubiuni. 



vagans (^Crytopleurum Muls.) 

 Necrophorus Linne. 



hebes Kb. N. Z. 97. 



orbicollis Say. 



var. Hallii Kb. N. Z. 98. 

 i-maculatus Dej. Cat. 

 pygmsBUS Kb. N. Z. 98. 

 velutinus Fabr. El. 1, tSi. 

 SiLPHA Linne'. 

 americana Linne' S. Nat. 2, 570. 

 var. ? Oiceoptoma affine Kb. N. Z. 

 103. 

 insequalis F. El. i, 340. 

 lapponica Hbst. Fabr. El. 1, 338. 

 caudata Say. J. Ac. 3, 192. 

 Catops Fabr. 

 *^ termiiians. 

 Cephennium Midler. 

 Meqaloderus Steph. 

 •^n.s. 

 ScYDM^ENUS Latr. 

 subpunctatus. 

 pilosicollis. 

 Bryaxis Knoch. 

 proplnqua. 

 longula. 

 Falagria Leach. 

 dissecta Er. 49„ 



var. erythroptera Mels. P. Ac. 



®* H. scaber. — ^Eneo-niger, capite thoraceque granulis dense scabfosis, hoc basi an- 

 gustato, lateribus late excavato, dorsoque foveato, lineis 5 impressis, intermediis sinua- 

 tis, elytris pone basin sensim ampliatis, versus apiceni oblique attenuatis, crenato- 

 striatis, basi bicarinatis, pone basin oblique impressis, interstitiis pone medium alterna- 

 tim tiiberculatis. Long. -IS. 



The third and fifth interstices have each three tubercles, the anterior one being small : 

 the seventh has two, and the ninth a very slight elevation. The striee are deeper 

 towards the margin than at the suture. 



^ C. terminans. — Ovatus minus convexus, niger opacus, dense pubescens, ruguloso- 

 punctatus ; thorace antice angustato, lateribus rotundato, basi utrinque sinuato, angulis 

 posticis subacutis, elytris stria suturali valde impressa, pedibus fuscis, antennis apice 

 parumincrassatis,apicesummo flavo,basi testaceo. Long. -IS. Pic: under old carrion. 



(J tarsi antici, dilatati ; tarsi intermedii articulo 1 ™o elongato dilatatoque. 



•** This species is the analogue of the European C. minutissimura ; it is no larger 

 than a Trichopteryx : I found but a single specimen on St. Joseph's Island, and al- 

 though it was safely secured in a bottle, it was not there by the time I reached camp. 

 I therefore forbear naming it, merely directing the attention of future explorers to this 

 very interesting species. 



